A specific dual serial port data transmission system based on usb
A dual serial port, specific technology, applied in the field of data transmission, can solve the problem of unsuitable transmission frequency, can not meet the radio frequency or precision application, etc., achieve the effect of solving the ESD protection problem, strong practicability, and solving the problem of digital-analog electrical crosstalk
Active Publication Date: 2022-03-01
HANGZHOU DIANZI UNIV
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On the other hand, devices such as pin headers and female headers are not suitable for transmitting signals with higher frequencies, and cannot meet the needs of most radio frequency or precision applications.
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.
[0027] see figure 1 , the present invention comprises a source circuit 10, a first interface circuit ...
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The invention discloses a specific dual-serial-port data transmission system based on USB. The first interface circuit communicates with the PC terminal, and the PC terminal inputs 5V power to it, including a MicroUSB slot, a 4-channel ESD protection array chip, a grounding resistor and Debugging resistance; the source circuit inputs VCC power to it from the first interface circuit, the source circuit outputs 5V power to the second interface circuit, and outputs VDD power to the USB-to-USB circuit; the second interface circuit and the USB-to-USB circuit are dual serial port connection communications, and The five interfaces of the MicroUSB connector are defined as the positive pole of the power supply, the first serial port read signal, the first serial port write signal, the second serial port read or write signal, and the negative pole of the power supply; the USB-to-USB circuit converts dual serial port transmission to USB transmission. The invention not only solves the problem of dual serial port data transmission to USB data transmission function, but also rationalizes the source supply logic between the PC interface and the target device interface, and solves the digital-analog electrical crosstalk problem and ESD protection problem among the above three.
Description
technical field [0001] The invention belongs to the field of data transmission and relates to a specific dual serial port data transmission system based on USB. Background technique [0002] Serial port is a very important interface technology in embedded system design. It is widely used in embedded devices in many fields such as industrial production, medical instruments, building automation, and automotive electronics. It is used to control devices and flow related data. The USB interface is the most widely used interface for computers, and is used to standardize the connection and communication between computers and external embedded devices; serial ports are hardly used in today's PCs and laptops. Therefore, in order to use computer equipment to control some application-oriented serial port embedded devices and collect target data, the serial port to USB technology is particularly important. [0003] The serial port to USB technology is to realize the conversion of gene...
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IPC IPC(8): G06F13/40G06F13/42
CPCG06F13/4068G06F13/4282G06F2213/0042
Inventor 袁经圆冯涛
Owner HANGZHOU DIANZI UNIV